Mine is not actually marked "Diamond" I am calling it that due to the fact that the engraving and overall quality in the gun is identical to the guns advertised as Diamond grades. Mine is marked "58" on the water table.
I am receiving in a couple of weeks a Meriden with more engraving. It has what I would call "Parker style" dogs on the side plates and Ducks on the bottom ( very much like a DHE Parker). I will share it with the class when I get it. One can tell that the engraving on a high grade Meriden is at the very least strongly influenced by Parker engraving.
